Storm chasers from an outfit called Fast Unit 70 uploaded raw footage of the first 10 minutes of the Moore, Okla., tornado that gives viewers a harrowing sense of what the EF5 twister looked like. Watch that footage here.

As cars and trucks zoom past, Chance Coldiron and Justin Cox's camera focuses on the dark gray funnel as it touches down. The tornado then tightens and begins to pick up debris. After a few minutes, someone can be heard saying, "It hit a house." Cars are then seen tossed into the air as the sky turns even more menacing. Urgent warnings can be heard on the storm chasers' car radio telling people to get underground.

justincox81 on YouTube posted the clip and wrote this in the description field:

Raw footage of Fast Unit 70's (Chance Coldiron & Justin Cox) coverage of the Moore tornado that was used by KOCO5 during the event on May 20th, 2013. We watched as the tornado formed in front of us and rapidly intensified then moved across highway 37 in Newcastle, OK. Then the tornado continued to intensify as it tracked across the Canadian River and the interstate 44 bridge. The monster tornado was filmed from close range off the I-44 bridge north of Newcastle as it was headed for Moore.

Other storm chasers uploaded their own clips of the twister's fury. A group calling itself Basechasers captured footage from outside a car. Roofs are blown away and houses destroyed. The wind is so strong that it becomes difficult to hear anyone speaking.

This clip, shot from a parking lot and posted by Charles Cook on YouTube, has racked up over 7 million views.